| /* |
| * PS3 bootwrapper entry. |
| * |
| * Copyright (C) 2007 Sony Computer Entertainment Inc. |
| * Copyright 2007 Sony Corp. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "ppc_asm.h" |
| |
| .machine "ppc64" |
| |
| .text |
| |
| /* |
| * __system_reset_overlay - The PS3 first stage entry. |
| * |
| * The bootwraper build script copies the 512 bytes at symbol |
| * __system_reset_overlay to offset 0x100 of the rom image. This symbol |
| * must occupy 512 or less bytes. |
| * |
| * The PS3 has a single processor with two threads. |
| */ |
| |
| .globl __system_reset_overlay |
| __system_reset_overlay: |
| |
| /* Switch to 32-bit mode. */ |
| |
| mfmsr r9 |
| clrldi r9,r9,1 |
| mtmsrd r9 |
| nop |
| |
| /* Get thread number in r3 and branch. */ |
| |
| mfspr r3, 0x88 |
| cntlzw. r3, r3 |
| beq 1f |
| |
| /* Secondary goes to __secondary_hold in kernel. */ |
| |
| li r4, 0x60 |
| mtctr r4 |
| bctr |
| |
| 1: |
| /* Save the value at addr zero for a null pointer write check later. */ |
| |
| li r4, 0 |
| lwz r3, 0(r4) |
| |
| /* Primary delays then goes to _zimage_start in wrapper. */ |
| |
| or 31, 31, 31 /* db16cyc */ |
| or 31, 31, 31 /* db16cyc */ |
| |
| lis r4, _zimage_start@ha |
| addi r4, r4, _zimage_start@l |
| mtctr r4 |
| bctr |
| |
| . = __system_reset_overlay + 512 |
| |
| /* |
| * __system_reset_kernel - Place holder for the kernel reset vector. |
| * |
| * The bootwrapper build script copies 512 bytes from offset 0x100 |
| * of the rom image to the symbol __system_reset_kernel. At runtime |
| * the bootwrapper program copies the 512 bytes at __system_reset_kernel |
| * to ram address 0x100. This symbol must occupy 512 bytes. |
| */ |
| |
| .globl __system_reset_kernel |
| __system_reset_kernel: |
| |
| . = __system_reset_kernel + 512 |
